DE10021345A1 - Mounting for ventilation or drain pipe which passes through flat roof comprises circumferential groove, second pipe section or flange with tubular extension fitting into first pipe and V-shaped spring clips holding pipe in position - Google Patents

Abstract

The mounting for a ventilation or drain pipe (2) which passes through a flat roof comprises a circumferential groove (3), into which a sealing ring (4) is optionally inserted. A second pipe section (5) or a flange (6) with a tubular extension (8) fits into the first pipe. V-shaped spring clips (9) hold the pipe in position.

Description

The invention relates to a fastening device for a Piping for penetrating roofs, especially flat roofing, for the purpose of ventilation and / or drainage, whereby the piping has a circumferential groove with or without a seal includes which on the outer circumference on a further piece of pipe or a flange with a tubular section can be pushed on, according to the preamble of claim 1.

Drainage facilities such. B. in the form of drainage gullies for non-ventilated flat roofs belong to the state of the art. With such gullies, a circumferential flange with reducer mechanically attached to a sheet steel profile. Above a vapor barrier is one or more thermal insulation layers that face upwards with a separating layer, e.g. B. raw glass fleece, are covered. Then on this separation layer actual roofing membrane, for example from Rhenofol (registered Brand of Braas Flachdachsysteme GmbH & Co. KG). A additional cuff is then ver with a gully flange welds the outer section of the roof penetration forms. The flange can be provided with the holes Roof material to be connected by screws, for this purpose in a z. B. Concrete roof on-site dowels must be put what with not inconsiderable effort.

In addition to the possibility of mechanical attachment as before Gulls are known to be used when  Roofing sheets are glued fixed. Here, however possible forces acting on the piping on the adhesive layer transferred and not from the material of the roof, e.g. B. Concrete or lightweight panels.

Roof bushings are also required for extractor pipe attachments derlich, the outer closure for the leading recording of Exhaust pipe designed cuff-like and with the roofing membrane is glued. Because of the different embodiments depending on the roof structure, roof substructure and roofing material is a large number of components that can only be standardized to a limited extent required with the disadvantage of a great effort in the Warehousing including the necessary fastening medium. Problems arise especially when, for example wise when renovating old buildings at a later date to add additional layers of insulation to a new outer roof skin bring, a pipe extension is required and fixing a mounting flange by means of screws cannot be done easily.

The applicant has already proposed a universal les system for penetrating roofs, especially flat roofs for the purpose of ventilation and / or drainage give, which gets by with a small number of parts and that in consequently implements a modular principle. This system consists primarily of at least one dimensionally standardized Flange with a flange ring and one with the flange ring one-piece pipe piece. The pipe section has one towards the flange ring with a first section larger inner diameter and an adjoining one stepped transition, second section. The second Section has a smaller one than the first section Inside diameter.

Furthermore, the first section is a circumferential groove for opening Taking a sealing ring formed, being in the second section at least two opposite on the outer circumference of the pipe section Overhangs with chamfers are present. In the first Section of the pipe section, d. H. on the inside of the flange ring,  is a circumferential rest jumping inwards formed edge, which preferably forms part of the groove.

The system already proposed also includes one with the second section connectable piping, which umlau fende groove with seal, the outer circumference on the Slip on the pipe section of the flange and by means of the projections can be locked in place.

The universal system can be optionally with a deciduous or Gravel trap gully should be provided, this circumference several laterally spaced, tapered fastening parts below owns. These fasteners have a return to Connect to the circumferential locking lug of the flange, where the conical end back into the sealing ring groove of the pipe section jumps. Optionally, the system can be an exhaust pipe with rain have protective and weather cap for ventilation purposes, wherein the lower end of the exhaust pipe from the pipe section and the one there located seal is securely fixed. In difference until the already known state of the art proposed system not from a complete gully or Exhaust pipe assembly, but a standard flange can be combined with means for forming the gully and also suitable for holding an extractor tube. As a result of that only the flange as a replacement flange on the material side be adapted to the roof membrane or roof membrane to be connected must, the remaining parts of the system unchanged Ver find application.

However, the fastening of the piping is problematic finally interchangeable flange, if not on usual screwing and dowels and / or glue is used. Such Fastening type sets appropriate material properties ahead and especially requires a large number of Penetrations on large roofs are not insignificant Workload. Known types of fastening are also relatively rigid, d. H. occurring forces will not or will not caught elastically, with the consequence of possible leaks  and / or cracks in the roof skin or in the piping material.

It is therefore an object of the invention to provide a novel fastener supply device for piping to penetrate through Roofs, especially flat roofs, for the purpose of ventilation and / or to specify drainage, the fastening being direction should be very easy to preassemble on the piping and secure fixing without dowelling is guaranteed, at the same time the storage of the piping is a rest has elasticity.

The object of the invention is achieved with a BEFE stigungseinrichtung according to the features of claim 1, the subclaims being at least useful configurations and training.

According to the invention are in the area of penetration in the roof the piping distributed several spring claws around the circumference positively arranged, the spring claws the piping hold and support against the environment. At the Insert the pre-assembled spring claws Piping the claws tighten against the environment, i. H. the roof material, and fix due to the now given Spring forces ensure the ventilation or drainage system is safe, without time-consuming drilling, doweling and screwing is required.

The spring claws have an essentially V-shape, whereby a bevel is formed on the tube-side leg of the claw, which in the circumferential groove that exist on the piping intervenes.

The leg on the fastening side points towards the surroundings Directional clamping bend, which in the tensioned, d. H. in the used condition of the piping with the surface of the Environment is in contact.  

The bend on the tube-side leg of the V-shaped claw has a first contact surface, which with the outer wall the piping, especially the upper area, which the has circumferential groove, comes into contact. To the first plant surface is essentially angled by 90 ° is a second Contact surface formed on the pipe-side leg, which with the outer top of the circumferential groove is in contact. A essentially angled at 90 ° to the second contact surface third contact surface is directed towards the circumferential groove and engages in this groove, so that the claw on the piping is secured.

A tubular section inserted into the tubing a flange, which is part of the vent or Ent water has a stepped portion that the Spring claw additionally against pushing out or Slide out locked.

For example, three or four spring claws are circumferentially pre-assembled on the piping, with the spring claws in the front assembled state are relaxed. The position of the spring claws is then such that these together with the piping Insertable or insertable into a hole or recess are, with the leg on the fastening side when inserted the inner wall of the bore is exciting and the piping is zen sliding along until the deep end position or End position has been reached and the spring claw is bent in the surface contact with the bore already mentioned inside wall occurs. For this, the clamping fold can additionally be a Have teeth or a cutting edge.

The spring claw can be easily punched and Manufacture the bent part from spring steel. Even after fixing the Piping using spring claws in a hole or off The entire system can save energy in the roof when it occurs Tolerances towards further venting or drainage positioned and connected to it, without impermissibly high loads or tensions in the  Piping itself occur, which usually consists of only one limited resilient plastic material.

When assembling the ventilation and / or drainage on site system, including flange ring, extractor hood or drainage drainage gully with connected piping, can Spring claws are easily installed and preferably from above in the holes on the roof or in or Cutouts are used. Also in the case of otherwise The spring claws offer anchoring of unsuitable materials a sufficient lateral hold and a security against unwanted pulling out or moving out. Depending on The type of material of the roof structure can have the spring properties and the formation of the clamping fold be optimized so that the latter either only in surface contact with the environment stands or penetrates into it with a predetermined measure.

In the event that a loosening of the spring claw attachment is desired from below with the help of a tool leg on the fastening side pressed towards the piping be followed by a corresponding movement Above is done to get the system out of the hole or recess remove.

The invention is illustrated below with the aid of an embodiment game and explained with the help of figures become.

Here show:

Fig. 1 shows a partial section through a piping with change flange, connection down and another piece of pipe up and inserted claw in the relaxed state and

Fig. 2 is a representation similar to FIG. 1, but now with a tensioned claw which fixes the Entlüftungsein direction in a recess in a flat roof.

In the embodiment according to FIGS. 1 and 2, a ventilation or venting system for a flat roof 1 is used, a downward piping 2 having a circumferential groove 3 with a seal 4 . The piping 2 receives a tubular section 7 of a flange 6 , a further pipe section 5 leading upwards being located in the interior of the flange 6 . The tubular section 7 of the flange 6 has a stepped region 8 , which locks the spring claw 9 shown upwards.

The spring claw 9 has a pipe-side leg 10 which has a bevel 11 . The attachment-side leg 12 of the spring claw 9 in turn has a clamping bend 13 in its end region, the z. B. may have an additional union toothing or a slope.

The bevel 11 on the pipe-side leg 10 has a first contact surface 14 , which comes into contact with the outer wall of the piping 2 , in particular the circumferential groove 3 .

Starting from the first contact surface 14, a second contact surface 15 is angled by essentially 90 ° and is connected to the outer top side of the circumferential groove 3 . A third abutment surface 16, which is angled substantially at 90 ° to the second abutment surface 15, is directed toward the circumferential groove 3 , in particular into the groove.

The double bend to form the first to third contact surfaces 14 to 16 secures the spring claw 9 to the pipe and absorbs the forces present during fastening and later operation.

The piping preassembled in accordance with FIG. 1 is then preferably inserted from above into a bore or recess 17 in the flat roof 1 , the leg 12 on the fastening side initially sliding along the inside edge or inside of the bore 17 and the claw being tensioned in the process . In the end position shown in FIG. 2, only the clamping bend 13 of the spring claw 9 is in surface contact with the inner wall of the bore, the piping being secured and fixed in relation to the surrounding flat roof via the selective pressing in the region of the clamping bend and the spring tension.

Bore tolerances, but also positional deviations from the concentric between the bore and the piping can be easily compensated for by the spring properties of the claws 9 , so that subsequent positioning within a predetermined elastic range for connecting the piping leading further down or up is readily possible.

Reference list

1

Flat roof

2

Piping

3rd

circumferential groove of the piping

4

poetry

5

another piece of pipe

6

flange

7

tubular section of the flange

8th

stepped area on the flange, which locks the spring claw upwards

9

Feather claw

10th

tubular leg

11

Bend on the pipe-side leg

12th

leg on the fastening side

13

Clamp bending

14

first contact surface

15

second contact surface

16

third contact surface

17th

Hole in the flat roof

Claims (4)

1. Fastening device for a piping for penetrating roofs, in particular flat roofs, for the purpose of ventilation and / or drainage, the piping comprising a circumferential groove with or without a seal, which can be pushed onto another pipe section or a flange with a tubular section on the outer circumference, characterized in that in the region of the penetration a plurality of spring claws are arranged in a form-fitting manner on the circumferential side of the piping, the spring claws holding and supporting the piping in a clamping manner with respect to the surroundings. 2. Fastening device according to claim 1, characterized in that the spring claws have a substantially V-shape, wherein a bevel is formed on the pipe-side leg, which in the circumferential groove of the piping engages positively and the leg on the fastening side facing the surroundings has directed clamping bend. 3. Fastening device according to claim 2, characterized in that the bend on the tube-side leg of the V-shaped claw a first contact surface, which with the outer wall of the Piping comes into contact a second contact surface essentially angled by 90 °, which in contact with the outer top of the circumferential groove comes, and essentially to the second contact surface by 90 ° has an angled third contact surface, which to umlau groove is directed towards it. 4. Fastening device according to claim 2 or 3, characterized in that the spring claws in the relaxed, fixed to the piping Condition such a position that the pre-assembled  Piping can be used in a hole or recess in the roof is, with the leg on the fastening side on insertion the inner wall of the bore is exciting and the piping is zen sliding along until the deep end position or End position has been reached and the spring claw is bent comes into surface contact with the inner wall of the bore.